Green Poison F1 Fast Version® by Sweet Seeds – Fast-Flowering Photoperiod Strain for High Yields

Green Poison F1 Fast Version® by Sweet Seeds is a high-performance photoperiod strain engineered for speed, delivering thick, aromatic, resin-covered buds in just 6 weeks of flowering—perfect for growers who want quality without the wait.

Still overthinking your next grow? Stuck between wanting big yields and not wasting months waiting? What if you could harvest in under two months and still get top-shelf bud? That’s exactly the headache Green Poison F1 Fast Version® was built to solve—no more endless flowering cycles, no more mold creeping in late season.

With this strain, you’re not just cutting time—you’re upgrading your entire grow rhythm. It hits fast, finishes faster, and dodges the autumn humidity that kills slower strains. Whether you're rotating crops indoors or beating the outdoor damp, this F1 hybrid turns impatience into advantage.

Why Choose This Fast-Flowering Powerhouse?

Bred from an elite Green Poison® clone and a 3rd generation Green Poison Auto® line, this strain merges photoperiod potency with autoflowering speed. You get the best of both worlds: massive yields and rich terpene profiles, without the 10-week wait.

• Harvest-ready in just 6 weeks of flowering
• Produces 500–600 g/m² indoors or 500–700 g/plant outdoors
• Thrives in both indoor and outdoor setups
• Resistant to botrytis, thanks to early harvest timing
• Delivers a balanced relaxing + creative high

Technical specifications

• Breeder / Brand: Sweet Seeds
• Type: Feminized, photoperiod-dependent
• Dominance: 70% Indica / 30% Sativa
• Genetics: Green Poison® × Green Poison Auto® (3rd Gen)
• Flowering time: 6 weeks
• Indoor yield: 500–600 g/m² (17.64–21.16 oz/ft²)
• Outdoor yield: 500–700 g/plant (17.64–24.70 oz/plant)
• Indoor height: 80–110 cm (2.62–3.61 ft)
• Outdoor height: 1.20–1.50 m (3.94–4.92 ft)
• THC: 15–20%
• CBD: 0.5%
• Difficulty: Low to medium
• Structure: Vigorous growth, sturdy side branches, dense bud formation
• Resistance: High resistance to mold (especially outdoors)
• Training: Responds well to LST and SCROG
• Flavour: Sweet, fruity, spicy, skunk
• Effect: Relaxing body high with a creative mental lift

How to Grow Green Poison F1 Fast Version®

Maximize your results with a smart, phase-based approach tailored to this strain’s rapid cycle. Whether you're growing indoors under lights or outdoors in the sun, this guide keeps you on track for a flawless harvest.

Quick overview

Feminized photoperiod strain from Sweet Seeds with a 6-week flowering cycle—ideal for fast indoor rotations or beating outdoor mold.

• Best for: Indoor SCROG, outdoor stealth, fast harvests
• Approx. total cycle: 9–11 weeks (4–5 weeks veg + 6 weeks flower)
• Difficulty: Low to medium
• Ideal climate: Temperate to Mediterranean

Safe start

Begin strong with healthy germination and early root development.

• Germinate seeds at 22–25 °C with high humidity
• Transplant once radicle reaches ~1 cm (0.4 in)
• Use airy soil mix with good drainage
• Boost root growth with Root It 150ml – Rooting gel

Directed growth

Set up your plant for success during vegetative growth.

• Provide 18/6 light cycle indoors
• Keep pH 6.0–6.5 in soil or 5.8–6.2 in coco
• Use 11–20 L pots depending on space
• Apply gentle LST to shape canopy early
• Feed with balanced nutrients like Dutch Formula Grow 1

Efficient flowering

Optimize flowering for maximum resin and yield.

• Switch to 12/12 light cycle to trigger bloom
• Maintain temps 20–25 °C and RH 40–50%
• Support heavy colas with stakes or netting
• Boost bud density with Bud Candy Advanced Nutrients
• Flush 7–10 days before harvest

Harvest and refinement

Nail the finish for premium-quality bud.

• Harvest when trichomes turn milky to amber
• Dry slowly at 18–22 °C and 50–60% RH
• Cure buds in jars for 2–4 weeks
• Store in airtight containers away from light

Frequently Asked Questions

How long does Green Poison F1 Fast Version® take to flower?

It flowers in just 6 weeks, making it one of the fastest photoperiod strains available.

Is this strain good for beginners?

Yes—its mold resistance, forgiving nature, and fast cycle make it beginner-friendly.

Can I grow it outdoors in a humid climate?

Absolutely. Its early harvest helps avoid late-season botrytis, making it ideal for wetter regions.

Does it respond well to training?

Yes, it handles LST, topping, and SCROG effectively—train early in veg for best results.

What kind of effects does it produce?

A relaxing body high with a gentle creative spark—great for evening use or creative downtime.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Green Poison F1 Fast Version® last season outdoors in Valencia, and it was a game-changer. We had a wet September, but thanks to the 6-week flowering window, I harvested clean, mold-free buds while others were losing crops. The plants grew tall—around 1.40 m (4.59 ft)—with thick, resinous colas from top to bottom. The smell during drying was insane: sweet lychee and green apple with a skunky punch. I used it for evening relaxation and found it perfect—calming without locking me to the couch. My only tip? Don’t over-prune; let it shine with minimal stress. This one’s going in my annual rotation.